Sand-box for water-conduits



(No Model.)

' 0. N. EARL.

SAND BOX FOR WATER GONDUITS;

No. 429,191. Patented June 3,1890.

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UNITED STATES PATENT ()FFICE.

CHARLES N. EARL, OF LOS ANGELES, CALIFORNIA.

SAN D BOX FOR WATER-CONDUITS.

SPECIFICATION forming part of Letters Patent No. 429,191, dated June 3, 1890.

Application filed November 2, 1889. gerial No. 329,015. (No model.)

To all whom it may concern.-

Be it known that I, CHARLES N. EARL, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented a new and useful Improvement in Sand-Boxes for Water-Conduits, of which the followin g is aspecification.

here water is drawn from running streams erate automatically to close the passage into the conduit and cause the water to flow elsewhere until the'reservoir is cleared.

My invention comprises a sand-box provided with an ingress-passage, an egress-passage below the level of the ingress-passage, an overflow-passage above the level of the egress-passage, and a cross-partition between the overflow and the egress extendingfrom above the level of the overflow to a point above the bottom of the box and below the egress and at such a distance from the egress that the surface of sand deposited at its natural angle of repose will extend above the opening beneath thepartition before itreaches the egress, so that before enough sand is-deposited in the box to allow it to escape at the egress, the accumulation of sand between the partition and the egress will close the opening beneath the partition, thus preventing the passage of water therethrough and cansing the water to flow out through the overflow at the side.

The accompanying drawings illustrate my invention. Figure 1 is a perspective View of my improvement. Fig. 2 is a longitudinal mid section showing the water passing through the box into the conduit. Fig. 3 is a longitudinal mid-section showing the water shut off from the conduit by sand and flow ing out at the overflow.

A is the box, which may be made of any suitable material.

*B is the ingress.

G is the egress; D, the partition; E, the passage beneath the partition; F, the overflow, and G the conduit.

For convenience I provide a flush-gate H at the bottom between the partition D and the end of the box. By opening this gate the sand can be flushed out of the box. I deem it desirable to provide a settling-tank I between the egress C and the conduit G to receive deposits of matter which may escape through the egress. IVithin the box at the ingress end I provide a bench J, level with the bottom of the ingress-passage, and extending across the box to distribute the water and prevent the strong downward current which might be caused by the inflowing water.

The operation of the invention is as follows: WVhen the water flows into the box A, it spreads out over the bench J, which distributes it and causes it to flow gently into the reservoir of the box, the current through which is slow, so that the sand is deposited therein. The current through opening E will be more rapid than that through the main reservoir of the box, and will therefore keep such opening sufficiently free from sand to allow the passage of water until the sand carried through into the compartment K will fall back and close the opening. When this occurs, the water flows out of the main reservoir through overflow F. The opening E can be made larger or smaller, as desired; but the position of its top relative to the egress must be such that the sand deposited in compartment K will close opening E before the sand reaches the egress. Compartment K should be of such capacity relative to that of E that the ascending current will not have force sufficient to carry sand out through the egress O.

In the drawings, L of sand.

Now, having described my invention, what I claim as new, and desire to secure by Letters Patent, is-

represents the deposits A sandbox for water-conduits provided with an ingress-passage, an egressqmssage below the level of the ingress-passage, an overflow-passage above the level of the egresspassage, and a cross-partition between the overflow and the egress extending from above the level of the overflow to a point above the bottom of the box and below the egress and at such a distance from the egress that the surface of sand deposited at the natural an- 10 gle of: repose will extend above the opening beneath the partition before it reaches the egress.

CHARLES N. EARL.

Witnesses:

J AJIES R. TOWNSEND, ALEXANDER GRANT. 

